C#自制的数值型文本框组件，这个文本框组件是由C#代码自定义编写的，仅支持数值型数据，可直接换算并保留出四舍五数值，只要您学会了这一种文本框的方法，你就可以定义其它类型的文本框了，举一反三，灵活运用。-C# homemade numeric text box components, components of the text box is custom written by the C# code, supports only numeric data, can be directly translated and retain a rounded value, as long as you learn a text box method, you can define other types of text boxes, replicability, flexible use.